Halp to nathan s



UNITED STATES PATENT OFFICE.

AUGUSTUS G. OHRISTMAN, OF READING, PENNSYLVANIA, ASSIGNOR OF ONE- HALFTO NATHAN S; ALTHOUSE, OF SAME PLACE.

PLOW-JOINTER.

@BFECIFICATION forming part of Letters Patent No. 345,770, dated July20, 1886.

Serial No. 152,414. (No model.)

To all whom it may concern:

Be it known that I, AUGUSTUS G. CHRIsT- MAN, a citizen of the UnitedStates, residing at the city of Reading, county of Berks, State ofPennsylvania, have invented a new and useful Improvement inPlow-Jointers, of which the following is a specification.

This invention pertains more particularly to an improvement upon theplow-jointer,

[O patented to myself as No. 275,354, April 10,

The object of the improvement is to simplify the construction of thejointcr, to make its adjustment more'readily, and to make the connectionwith the main standard positive or frictional, at the will of theoperator by a reversal of the the position of the button relative to thegroove in the lower standard.

The above objects are secured in the use of a jointer constructed asshown in the accompanying drawings, in which similar letters ofreference indicate similar parts.

Figure 1 represents in elevation a plow with my improved jointerattached thereto; Fig. 2 2, an elevation of the main standard, the

jointer-standard locked thereon by the reversible button; Fig. 3, anedge view of the same; Fig. 4, a front elevation of the main standard.Fig. 5 represents the reversible button in perspective plan and in sideelevation; Fig. 6, a section of the main standard, lower standard, andreversible button on the line a b of Fig. 3, showing the frictionalapplication of the button; Fig. 7, a section of the same parts upon thesame line, showing the grip or look application of the button; Fig. 8, areverse plan of the foot of the main standard with body and ribs insection, showing the clamp or angle regulator in combination therewith.Fig. 9 is a side elevation of the clamp or angle-regulator together witha plan of the corrugated washer.

A represents the plow-beam; B, the main standard, which is provided witha seat, B, to receive the lower standard,with guides B" B whose outerface is level with the thickness of the lower standard arm, 0 the faceB" between the guides being sunk below the face of the same, to receiveand form a channel for the pads D of the button D, an oblong slot, 13,

between said guides, permitting the securingbolt E of the button D torise or fall with the vertical adjustment of the jointer F, which issecured by bolts G to the lower standard. A deep rib, B, upon the foot,and a shallow rib, B, at the outer edge of the same serves as a lock tothe foot H of the angle-regulator, and an oblong slot, B", for the boltI permits the angular adjustment of thejointer, while teeth B on theseat B, interlocking with similar teeth upon the back of the-lowerstandard, prevent vertical displacement. An oblong slot, H, in the headH of the angle-regulator H, permit a parallel transverse movement of thejointer relative to the beam A; or the 6 main standard may be swungaround upon the fulcrum-boltJ. The raising of the face B* above that ofB, the thickness of metal being retained, as shown in the sections Figs.

6 and 7, form pocketsin the rear for the boltheads, and prevents thesame from turning. The lower standard, 0, is provided with a seat, 0, towhich the jointer F is secured by bolts G. The arm G" has a longitudinalgroove, 0 of saw-tooth form, sunk upon its face about threeeighths of aninch from its back edge, said groove being vertical to a depth of aboutthree-sixteenths of an inch, and flaring off to nothing at aboutthree-fourths of an inch from the back edge of the same, while the outerface is provided with tapered recesses O, which interlock withcorresponding tapered lugs D upon the face of the button, and therebyprevents vertical displacement, yet leaves it free to give way to impactwhen 8 5 held by frictional contact with the button D, as described.

The reversible button D is preferably made of an oval form, having uponits face, in the line of its shortest diameter, a series of pads, 0 D,and parallel with the same line, at such distance therefrom as willcorrespond with the groove 0, (the pads lying between theguides B B,which takes the strain off of the bolt E,) a saw-tooth ledge, Dcorresponding therewith, 5 a central bolt-hole, D", and two opposite andequally-distant tapered lugs, D", which interlock with the taperedrecesses G of the lower standard for vertical adjustment.

The angleregulator H may be a light mal- 10o leable casting having afoot, H, with the body raised at H to fit over and lock the same uponthe rib B of the main standard foot, the head H being provided with atransverse slot, H, and light ribs H, with corrugated face H between thesame. A squarc-hole washer, K, similarly corrugated, plays between theribs H and securely holds the angle-regulator in place beneath the beamby the bolt J. By this means the fulcrum-point of the main standard maybe changed at will.

lhe several pieces, as described, being provided, the main standard B isbolted through the angleregulator foot, and through the slot B to thebeam A by the bolt I, the head H of the angle-regulator being secured tothe beam by the bolt J. The lower standard, 0, is then laid upon theface B, against the guide 13*, and, if the ground to be plowed is heavyand encumbered by stumps or stones liable to catch and disarrange thejointer, the button D is placed in contact with the jointer-arm G in theposition shown in Fig. 6, and the bolt E tightened up, the standard-armin this case being held in place by friction alone; and should anobstruction be met the jointer will give to the same, and draw out fromthe frictional grip of the button and drop upon the ground withoutbreaking, and is readily replaced when the obstruction is passed; butshould the ground be free from obstructions and the soil light, theattachment of the lower standard to the main is made in the manner shownin Fig. 7, in which case the jointer becomes an integral portion of themain standard.

To raise or lower thejointer, the button is released, the change made asdesired, and the button again secured,which retains the jointer at thepoint set. To swing the jointer at an angle with the center line of thebeam, the nut of the bolt I is loosened, and the main standard grippedby the foot of the angle-regulator, is swungaround upon the bolt J ofthe head H until the desired angle is secured, the nut of the bolt Itightened, and it is ready for work. Should it be desirableto move thejointer transverse to the beam and parallel with its center longitudinallines, both bolts I and J are loosened, and the change is readily made.By this means of adjustment the operator is enabled to so arrange hisjointer as to avoid the danger of breaking it in rough land. At the sametime he can also arrange it so as to possess all the advantages withoutthe disadvantages of a jointer firmly locked to its standard or beam.

Having shown the construction and described the use and advantages of myimproved plow-jointer,I desire to secure by Letters Patent the followingclaims thereon.

1. As an improved construction of plowjointers, a main standard providedwith a seat for the lower standard, and guides with a recessed faceparallel therewith, an oblong bolt-hole at the lower end of the same, afoot having an oblong transverse bolt-slot therein with guiding-ribsparallel with the same, in combination with the beam A, angle-deflectorH, and bolts I J, substantially as and for the purpose described.

2. As animproved construction of plowjointers, an angle-regulator orgrip of the general form shown,having a foot adapted to pass over theouter rib of the main standard-foot, and to lie between the parallelribs of the same, abolt, I, securing it together with said standard tothe plow-beam, the head provided with an oblong bolt-slot, ribs paralleltherewith, a corrugated face, and a corrugated washer with a centralhole adapted to interlock therewith, a bolt, J, securing the same to theplow-beam, and forming a fulcrum-point for the combined angleregulatorand standard, as and for the purpose set forth.

3. In combination with standard B and colter-holder O, a button,preferably of an oval form, having pads adapted to slide freely be tweenthe guides of the main standard, a sawtooth ledge near, one end of thesame, adapted to interlock with the saw-tooth groove of the lowerstandard,and two equidistant taperlugs adapted to interlock with thetapered recesses G of the lower standard for vertical adjustment, abolt,E, common to the button and main standard, Securing the button with thesaw-tooth and groove interlocked asa positive connection, or with thebutton reversed as a frictional connection, for the lower standard andjointer, as and for the purpose set forth.

4. An improved plow-jointer consisting, essentially, of the followingelements, in combination: an independent main standard, B, with seat13', guides B B the foot provided with an adjusting-slot, B, and ribs B13 an angle-regulator, H, lapped over rib I3, and with its foot betweenribs B 13 its head H." secured to the beam A by bolts J, and its foot Hwith that of the main standard to the beam A by bolt I, a lowerstandard, 0, with the jointer F secured thereto and held in place uponthe main standard B by a reversible grip or friction button, D, by boltE, and lugs D, interlocking with recesses O of the lower standard,substantially as shown, described, and for the purpose set forth.

AUGUSTUS G. OHRISTMAN.

Witnesses:

JAMES It. KENNEY, DANIEL KILPATRIOK.

